Please answer the marked questions..........
Please show your work.............
Please answer the marked questions.......... Please show your work............. that all young adult men is greater...
Please answer the marked questions.......... Please show your work............. you know that th 100, at the b. Repeat part (a) assuming that ulation standard deviation is ơ the conclusions produced (a) assuming that you know that the n standard deviation is ơ 3( In art c. Explain why arts (a) and (b) are virtually identical, the interval estimate produced in narrower than that in part (a). why ling 1,000 membersofa normal popula- Applications nd 15,500 ands 9,950. Estimate The following...
Complete entire problem, showing ALL work so the learner can transpose into a notebook. 3. (SECTION 11.2) Spam e-mail has become a serious and costly nuisance. An office manager believes that the average amount of time spent by office workers reading and deleting sparn is NOT 25 minutes per day. To test this beliel, he takes a random sample of 18 workers and measures the amount of time each spends reading and deleting spam. The results are listed here. If...
The club professional at a difficult public course boasts that his course is so tough that the average golfer loses a dozen or more golf balls during a round of golf. A dubious golfer sets out to show that the pro is fibbing. He asks a random sample of 15 golfers who just completed their rounds to report the number of golf balls each lost. Assuming that the number of golf balls lost is normally distributed with a standard deviation...
The club professional at a difficult public course boasts that his course is so tough that the average golfer loses a dozen or more gold balls during a round of golf. A dubious golfer sets out yo show that the pro is fibbing. He asks a random sample of 15 golfers who just completed their rounds to report the number of golf balls each lost. Assuming that the number of golf balls lost is normally distributed with a standard deviation...
A golf balls manufacturer requires that the weights of its golf balls have a standard deviation that is less or equal 0.08 ounces. One of the quality control inspectors says that the machines need to be recalibrated because he believes (claims) the standard deviation of the weighs of the golf balls is more than 0.08 ounces. To test the machines, he selects a random sample of 50 golf balls off the assembly line and finds that they have a mean...
Please show hand written work for everything including formulas etc. For problems 9, 10, 11, and 12, solve the problems by answering a) State the claim (use a sentence), b) H, H and place the claim with either one of the two. c) Test statistic, show and label the formula you use. d) Find critical value(s), and reject Ho or fail to reject Ho. You may use ap-value. e) Write a formal conclusion and final statement 11. A golf balls...
Please answer the marked questions.......... Please show your work............. of 18 and s25. Test nough evidence infer that the on the package. A random sample ers whose packaging states that the contents weigh 8 ounces was drawn. The contents were weighed and the results follow. Can we conclude at the 1% significance level that on average the containers are know that the mislabeled? produced in tical. with α .05 = 1,000. 7.80 7.91 7.93 7.99 7.94 7.75 7.97 7.95 7.79...
cording to a survey, the average young adult male plays video games for 4 hours per week. To test fthe amount of video male plays video games for 4 hours per week. To test if the amount of video est, at a 5% significance level. She surveys 28 male college students randomly and asks them about their amount of video games each week on average. games in college is more than the national average, a researcher decides to do a...
show work please Problem 2: Use the following to answer questions a)-e): A random sample of 48 students at a large university reported getting an average of 7 hours of sleep on weeknights, with standard deviation 1.62 hours. A dotplot of the data is provided. 9.6 Weekniaht Sleep a. Briefly explain why it is reasonable to use a t-distribution to perform inference about the mean amount of weeknight sleep for students at this university. (2 points) The research question: It...
The air pumps at service stations come equipped with a gauge to regulate the air pressure of tires. A mechanic believes that the gauges are in error by at least 3 pounds per square inch. To test his belief he takes a random example of 50 air pump gauges and determines the difference between the true pressure (as measured by an accurate measuring device) and the pressure shown on the air pump gauge. The mean and the standard deviation of...